Universal boring apparatus.



W. BOWDBN. UNIVERSAL BORING APPARATUS. AAPPLICATION FILED JUNBS, 1912.

Patented De0.10,1912.

. Witnesses nventor by l Attorneys UNITED sTATEs MCHENE'Y, MISSISSIPPI, AssIGNoR or ONE-HALF -To A. GAUsE, or IIoWISoN, MIssIssIPPE PATENT oFEIcE.-

THOMAS UNIVERSL BORING APPARATUSM i .To allwhom 'it may concern: A

i Be it known that I, WILLIAM ABOWDEN, a

citizen of the United States, residing at McHenry, in the county of` Harrison and -State of Mississippi, have invented a new and useful Universal Boring Apparatus, of which the following is a specification.

lhis'invention relates to a boring apparatus, and has for its .primary object to pro! vide means for operatively connecting a drill be simple, substantial, durable and ineXpen sive in construction, which shall be convenient, practical and eiicientin use, and-which shall provide a desirable device of this character.

The invention has been illustrated in its prefered embodiment in the accompanying drawing, wherein similar reference characters have been '.:u'iployed to denote corresponding paris and wherein Figure 1 is an elevation of lthe present apparatus as in use. l? 2 is a longitudinal sectional view thereof on an enlarged scale, parts being broken away. Figs. 8 and 4 are enlarged sectional details taken on the lines Referring specifically to the drawings, the numeral 5 designates a standard or other upright, which may be mount-cd on a suitable vehicle, and which bears a pair of bearingsv 6 through which a horizontal shaft 7 is journaled, the said shaft being adapted to be actuated by'auy suitable motor carried by the vehicle, or by manual power. The said shaft 7 has a pair of collars 8 thereon bearing against the outer faces ofthe bearings 6 so as to constrain the shaft 7 against longitudinal movement. The support or upright 5 may be pivotally mounted so that Specification of Letters Eatent. Application led June 3, 1912. Serial No. 701,328. l .i

Patented Deo. 10,1912.

the apparat-us may be swung about a vertical axis, if desired. I. j A solid driven shaft 9 is connected to the drivingshaft 7 by a' universal joint .10, and

a tubular extension yshaft 11 is telescopically engaged upon the free end of the driven Y shaft 9. The tubular shaft 1l is therefore free to slide longitudinally on the shaft 9 -and is constrained to rotate therewith by means of a'paircf diametrically opposite feathers 13 secured within the inner end of `the shaft 11 and engaging in the diametrically opposite lougitudinalfeather ways or grooves 12 extending throughout the length of the4 shaft 9. A collar 14 is secured -'ons the inner end of the shaftll overthe: feathers 1.3 so as to reinforce the shaft.l

The outer end of the borey of the shaft 11 is tapered so as to provide aY chuck or socket- 19 for the reception of the shank' 20 of a drill 21. I The shankQO of the drill is tapered to correspond with Vthe taper of the chuck or socket- So that the shank ma bind therein in order to rotatewith the shaft 11. The shaft 9 may be suiiciently long so that when the tubular shaft 11 is forced inwardly with suifiicient momentum, the said shaft 9 will strike the shank 20 of the drill and loosen same, .so that t-he drill will be ejected. This isof advantage should the shank 20 of the drill stick or bind tightly in the chuck 19.

A collar 15 is mounted loosely on the shaft 11 and has al pair of oppositely proj ect'ing handles 16. This collar 15 is mounted between a pair of collars 17 on` ashaft 11, which yare securedrigidly thereon by set-screws 18. The set-screws" 18 permit `the the shaft 11i-so as to posit-ionlthe handles 16 at the most convenient point on the shaft 11.

99. collars,17 tobe adjusted longitudinally on@ This apparatus may used for various purposes, but is primarilyY adapted for use4 in connection with seatiaageplosive charges in stumps and trees for iai-lasting same;` For this purpose, it is conveiient to... mount the standard 5 on a wagojorother vehicle, the shaft 7 being driven by a. suitable mot-or or by manual power. The vehicle maythen be brought adjacent*` the stump, .'and the drill 21may then be conveniently directed towardV the stump andthen projected so as to` enter the stump and'` bore a hole therein for the reception of the explosive charge.

- 2 1 is convenient-ly manipulated by the operator. or goperators, who may grasp y conveniently swing or reciprocatejtheV sha $11 to properly position the drill and force the same into the stump or other object and then retract same. With an apparatus of this character, an .operator or two may go from one stump or tree to the other and-may rapidly and conveniently bore holes thereinV f yfor receivnglthe explosive charges.

A.This apparatus is not `only convenient for boring 'holes in-stumps, and other objects,

for the purpose of blasting, but may beementto those skilled in the art.

From. the foregoing, taken in connection "with the drawings, it. will appear that the objects aimed at are attained in an e'ective andfsatisfactory manner, so as to present a desirable apparatus 0j,v this character, and it is understoodA that-"this device is suscepti-ble of alterationsvor'deviations in its de ployed in other capacities, as will be appar.

tails within the scope of the appended claim without departing from the spirit of the invention.

j Having thus described the invention, what is claimed as new is A boring apparatus embodying a driving shaft, a' drivenshaft connected thereto by a universal joint and having a longitudinal lfeatherway, a tubular extension shaft telescopedlupon the free end of the driven shaft and having the outer end of its bore formed into a drill chuck into which the driven shaft is projectable to eject the drill, a feather secured within the inner end of the tubular shaft and engaging in the featherway, a loose collar on the tubular shaft, and means for adjusting the collar longitudinally on the tubular shaft. In testimony that I claim my own, I havevhereto' aixed my signature in the presence of twolwitnesses.

WILLIAM BOWDEN.

Witnesses:

F. W. MCI-IENRY, J. M. BUERLY.

the foregoing as Y 

